Synopsis

Plot

It is Mother's Day and all the students are making cards to express how much gratitude they feel for their respective moms. Gumball and Darwin are making a card that represents Nicole as a superhero. Darwin states that their card needs more glitter, to which Gumball responds it is already so shiny he needs sunglasses to read it. Darwin says he does not want to disappoint her like last year. They then remember past year, when they offered her a "perfume", which was in reality an air freshener. Nicole, not to disappoint her sons, who intended to impress her in Mother's Day, tried her new "perfume", which burned her eyes. Going back to the present, Darwin points out that their gift made her smell like a car for months, although Gumball responds to him that she "loved it". Tobias interjects into their conversation, replying that "Superest Mother in the World" is written on their card. He claims that his mother is better than theirs, to which Gumball answers that Tobias' mom is only better on being "average", because Nicole is awesome. Banana Joe also decides to interject into the conversation, alleging his mother is the best in the world and indicating that it is written on his card. Gumball replies that just because he wrote something on a piece of paper, that does not mean it is true. Darwin questions Banana Joe about his card and he decides to show it, revealing it is a sad clown with "Superest Mom" written at the top, although Banana Joe is convinced that it is a banana.

Gumball explains that their mothers are only the best mothers in their neighborhood, to which Darwin replies that, sometimes, Nicole also drives down their street. Due to this, Gumball reconsiders, concluding that Darwin is right and claiming that their mothers are only the best inside their own houses.

The school bell sounds. Gumball and Darwin are about to leave the classroom when Tobias manifests, telling them to back off. Gumball also tells him to back off, starting a whole discussion of "Back offs". Darwin, sick of their discussion, asks them, rhetorically, if they are going to fight or dance. Gumball has an idea about how to determine the best mom ever but before revealing it, he is interrupted by Banana Joe, who suggests trapping their moms inside a cage, where they will fight to the death. Gumball refuses and proposes to establish a contest in which they will evaluate each mother's qualities and determine who has the best mom ever.

After school, Gumball and Darwin bring their mom, Nicole to the mall. Nicole has closed her eyes wondering about the surprise her sons have organized to her. When wondering about a new haircut, Nicole states that the last time Gumball and Darwin tried to cut her hair she had to wear a back brace and a wig for a month. Gumball suggests her to enjoy some time in the mall because they have to do something more. They meet with Tobias and Banana Joe, asking them if they have also brought their moms. Tobias and Banana Joe respond that yes, they did it. All of them, including Darwin, start commenting how shameful it will be when realizing that one of their moms is better than the others. They stop and, to be clear, Gumball assures that none of their moms knows that they have established a contest to identify the best mom ever. After making sure everything is right, he interrogates everyone, asking if there are more questions. Banana Joe asks him if the question has to be related to their plan, to which Gumball agrees. He makes another question but Gumball ignores him and decides to start officially their contest. The first round is speed.

Nicole is rising on an escalator. However, Tobias modifies its direction so it can move at the backward, also increasing its speed. Nicole starts running, jumping over a bunch of people who are trying to come down. She is running so fast that, as soon as Tobias turns off the escalator and recognizes, reluctantly, that Nicole has won this round, the power of inertia makes her continue running, breaking a window and fly over the mall on a huge speed. The next round is reflex challenge. Banana Barbara is walking on the mall when, suddenly, a tin can hits her on the head and she passes out. Banana Joe hit her with the can so he could prove his mother had good corporal reflexes. Darwin suggests that Banana Joe should try to warn his mother. He throws her a can, hitting her on the head again and saying to watch out then. Darwin mentions that Banana Joe should have warned her before throwing the can. He decides to throw it one last time and warns his mother, who is too slow to understand she is about to be hit and injured a third time. Gumball decides to attribute her one point for having survived that. It is then time to test Jackie. As she walks near to the fridges zone, Tobias lets one of them fall over his mom, who catches it and raises it with her "super strength", surprising Darwin, Gumball and Banana Joe so much that they decide to go away, preparing themselves to the next challenge. However, it is revealed that both Tobias and Jackie are cheating in the contest, ashe fridge that fell over her is made of cardboard.

More challenges are made. They are always introduced by Darwin with unusual lady's legs. And in all of them, Tobias and Jackie cheat on the contest, prejudicing Nicole and Banana Barbara to win every round.

At the last challenge, which is the Hot Sauce Challenge, Jackie tastes a whole bottle of spicy pepper. Tobias praises her and winks his eye to her. However, that denounces them and Gumball understands that they replaced the hot sauce for ketchup and have been cheating all the time. Jackie denies it several times but she is forced to admit it later. After that, Banana Barbara shows up and tastes a spoonful of hot sauce, which makes her blow up.

Nicole is sitting down on a chair, tired due to the contest Gumball, Darwin, Tobias and Banana Joe organized secretly. Gumball and Darwin decide to show up and announce they she has won their contest and has proved to be the Best Mom ever. However, when she discovers she has been suffering all this time because of them, she angrily punishes her sons by sending them to the car.

Gumball and Darwin now understand that what they did to their mom was wrong and decide to make things right for Nicole, and decided to write on a sign how much regretful they are for having upset her. Nevertheless, they get suspended when their scaffold falls, facing a certain death. Gumball starts screaming. Darwin replies that his mom cannot hear him, but incredibly, Nicole (who was in a salon) heard his cries for help, understanding they are in danger and decides to rescue her sons (while wearing a cape from the hair salon and getting a curl of hair on her head from one of her hair curlers). When reaching the building where they are, a guard interrupts her, claiming that only cars can pass through the gate. She ignores him and immobilizes him, managing to reach the interior of the building. Gumball screams to her that they are at level thirty-two, which upsets her because she is already very tired. However, the commercial sign they are holding onto rips and they go down to the level sixteen. A crowd is observing this horrible scene. Gumball's pants go down and his underwear are exposed, which disgusts them.

Gumball and Darwin cannot hold on to the commercial sign for much longer and start to fall. However, Nicole grabs an extinguisher hose, attaching it to her body and jumping from the level sixteen to catch them. She is able to save her sons, and Gumball and Darwin are rescued before reaching the floor and getting injured.

The crowd praises Nicole, who informs Gumball and Darwin that what they did was very dangerous, but she realizes they did all of that to impress her and her sons really could do something special for her. Gumball tells her she is the superest mom in the world. Banana Joe shows up and tells to his mom she is the superest mom in his heart. Tobias decides to offer a card to Jackie but when she is about to receive it, her son rips it and looks at her with a disappointed glare.

Nicole mentions she needs help to go to the car because she put her back out. Gumball tells her she is invincible and can do everything, to which she responds that she is not a superhero, just a regular mom would do to her sons. She rises up and says, "Now come on. Let's go home," and the hose roller which she is attached to falls from the level sixteen, getting on a street light and hoisting her, which makes her appear to be flying like a superhero. However, the other side of the hose comes down and crashes into the ground, ending the episode.

Gumball: Dude. Just because you wrote something, doesn't mean it's true.

Darwin: What is it anyway?

Banana Joe: What do you mean, "What is it?" It's a banana!

[He shows his card. On it is "Superest mom" with a sad clown's face. No one says anything, and he puts his arm down]

Gumball: Look. I don't wanna break anyone's heart here. But at the max, your moms could be the superest in you neighborhood.

Darwin: Well sometimes, Mrs. Mom drives down their street.

Gumball: Oh yeah, right. Superest mom in your house then, tops.

[The bell rings. Gumball walks to the door only to be blocked and pushed away by Tobias]

Tobias​: Back off man!

Gumball: [Spins, then pulls a fighting stance] How 'bout you back off?

Tobias​: [Spins, then pulls a fighting stance] You back off!

Banana Joe: [Does some swinging punches] Ohhhhhhh! You back off!

Darwin: [Sarcastically] Are you guys gonna fight, or dance?

Gumball​, Tobias and Banana Joe: Dance. Probably dance.

Darwin: Then how are we gonna settle this?

Gumball: There's only one way to settle this. [Zooms in dramatically on his face]

Banana Joe: We put our moms in a cage! Three go in! One comes out! Three go in, one comes out [Quiets down]

Gumball: There's only one morally acceptable way to settle this. [Zooms in dramatically on his face] Let's have a mom-off!

The Mom-off Begins

[Gumball, Darwin, and Nicole are walking in the mall. Nicole has her eyes covered]

Nicole: It's so nice that we're doing something together on Mother's Day. I can't wait to see what my surprise will be. Is it a back rub? A [Opens her eyes] haircut? [Gasps] I'd love to have it done by a professional this time. The last time you guys did it, I had to wear a back brace, and a wig for a month.

Gumball: Why don't you um…look around for a couple of hours? There's a little something we need to do.

Darwin: Okay. What you'd probably want to try is shouting before you throw the can.

Banana Joe: Good idea! Heads up!

[Once more, his mom is knocked down. They all walk to her]

Darwin: Dude! You should've called from where the can is coming.

Gumball: Let's just give her a point for surviving this. Next up: Tobias' mom. Strength!

Round 3: Strength

[Tobias' mom, Jackie Wilson walks to the appliances section. Tobias dumps a refrigerator on her, and she catches it but struggles to lift it up. Gumball, Darwin and Banana Joe gasp. She eventually lifts it up high, making all spectators bulge out their eyes]

[His mom throws the refrigerator, and spins it around. It is revealed that the ref is actually just cardboard. Tobias and his mom laugh maliciously]

Tobias: Ahh. Cheating.

The Challenge Goes On!

[A montage of the mom-off begins. Darwin carries cards with the numbers of the rounds on them, and announces]

Darwin: Round four: agility!

[Gumball knocks over a bottle of oil. Nicole walks over the oil, and manages to surpass the puddle of oil. Gumball winks at Tobias. Tobias' mom skates on the oil with a basket. He winks at his mom. Banana Joe's mom slips. Despite this, Banana Joe shows his pride for her]

[Darwin sighs; Nicole, on the other hand jumps over several cars on her way to the boys]

Gumball: I think if I pull myself onto that ledge, then I can backflip over that railing then vault over to that open window. I know you're not as athletic as me so just hang on in there, buddy. I'll come back for you. [Strains himself to get to the nearest ledge but fails]

[Nicole jumps over more cars]

Billy: Mother, look! Is it not a bird? Is it not a plane?

Felicity: [Looks in wrong direction] It's a plane.

Billy: No, not that. [Points to Nicole] That.

Nicole: Hang in there boys! [Jumps off car and lands before a security barrier]

Nicole: [Pushes the gate hard] Sorry, my kids are in trouble. [Runs off just as the guard gets pinned against a wall]

At the Parking Lot

[Gumball and Darwin panic]

Nicole: KIDS! What floor are you on?

Gumball: [offscreen] It's about level 32!

[Nicole looks at the floor sign saying "3," meaning she has to climb up multiple flights of stairs to get to the boys, making her sigh in exasperation and run off]

Darwin: Ahh, I'm sure one day we'll look back at this and laugh. [Poster rips] But not today.

[The poster tears and swings down to the parking lot's 16th floor, carrying Gumball and Darwin with it. But it stops as a crowd watches. Darwin then accidentally pulls Gumball's pants down, revealing Gumball's underwear, making the crowd react in disgust.]

Nicole: [Completely exhausted, having had reached level 32] Kids, where are you?

Gumball: [offscreen] Mom, we're at level 16 now!

[Nicole sighs and heads down]

Gumball and Darwin: [In unison] MOM!

Nicole: Are you guys alright?

Gumball: I'm okay! But Darwin isn't as athletic as me, he wont be able to hold on much longer!

Nicole: Hang tight!

[She grabs a fire hose and ties it to her body just as the poster completely tears and Gumball and Darwin scream as they plummet into the street. Nicole jumps off the nearest ledge, and the fire hose swings her down towards the boys. She successfully catches them and they swing down to the pavement while Gumball keeps screaming, not knowing that they're already safe]

Darwin: Dude, we're okay.

Gumball: [Stops screaming] Yeah, yeah I know.

[The crowd cheers]

Nicole: Kids, that was very dangerous. I know you were just trying to do something special for me, but-

Gumball: But you proved you're the Superest Mom in the World.

Banana Joe: [To mom] You're the Superest Mom. At least in my heart.

Banana Barbara: No, you're the Superest Mom.

Tobias: And here's your Superest Mom card.

Jackie: Oh, thank y-

[Tobias' mom proceeds to take the card but her son angrily rips it]

Nicole: Now kids, you really can do something for me.

Gumball: Anything.

Nicole: Help me to the car, I think I put my back out.

[The fire hose roller Nicole is tied to detaches]

Darwin: But you're a superhero.

Gumball: Yeah, you're invincible!

Nicole: Kids, for the last time I am not a superhero. I just did what any mom would do. Now come on. Let's go home! [Gets hoisted by the fire hose as if she were flying like a superhero, just as the hose roller hits the ground]